I saw a recent fought where xenevorash did not (definitely since last patch), but perhaps there were other circumstances (rooted? Didn't appear to be, should have asked). No need for the logs!
Edit: Did some add'l google searching, looks like a video upload of April 2018 and Xenevorash fought to the death
http://www.batyoutube.com/watch?v=G4A113KOTx8